class SiteController

def self.cache_timeout
  TrustyCms::PageResponseCacheDirector.cache_timeout
end

def self.cache_timeout=(val)
  TrustyCms::PageResponseCacheDirector.cache_timeout = val
end

def cacheable_request?
  (request.head? || request.get?) && !Rails.env.development?
end

def can_view_drafts?
  user_signed_in? # CMS users can view drafts
end

def find_page(url)
  Page.find_by_path(url, can_view_drafts?)
end

def process_page(page)
  page.pagination_parameters = pagination_parameters
  page.process(request, response)
end

def response_cache_director(page)
  klass_name = "TrustyCms::#{page.class}ResponseCacheDirector"
  begin
    klass = klass_name.constantize
  rescue NameError, LoadError
    director_klass = 'TrustyCms::PageResponseCacheDirector'
    # Rubocop: The use of eval is a serious security risk.
    # eval(%Q{class #{klass_name} < #{director_klass}; end}, TOPLEVEL_BINDING)
    klass = director_klass.constantize
  end
  klass.new(page, self)
end

def set_cache_control
  response_cache_director(@page).set_cache_control
end

def set_etag(val)
  headers['ETag'] = val
end

def set_expiry(time, options = {})
  expires_in time, options
end

def show_page
  url = params[:url]
  url = if Array === url
          url.join('/')
        else
          url.to_s
        end
  if @page = find_page(url)
    # This is a bit of a hack to get Vanity URL pages working in another extension
    # In Rails 2, redirect_to halted execution, so process_page could be aliased and
    # a redirect could be used. This no longer works. There's a better fix for this,
    # but for now, anything that aliases process_page can return false if it's rendering
    # or redirecting on its own.
    return unless process_page(@page)
    set_cache_control
    @performed_render ||= true
    render layout: false
  else
    render template: 'site/not_found', status: 404, layout: false
  end
rescue Page::MissingRootPageError
  redirect_to welcome_path
end